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Vennov diagram a množiny
\( \normalsize\left(A\cup C\right)-\left(C\cup D\right)=\emptyset \)
\( \normalsize\left(A\cup C\right)-\left(C\cup D\right)=\{a, b\} \)
\( \normalsize\left(A\cup C\right)-\left(C\cup D\right)=\{x, y\} \)
\( \normalsize\left(A\cup C\right)-\left(C\cup D\right)=\{1, 2\} \)